Warp stop-motion for looms.



Patentgd Nov. I 8, I902,

. 4.. v. &, E. CUNNlFF. WARP STOP MOTION FOR LOOMS.

(Application flied Mar. 31, 1902.)

5 Sheets-Sheet I.

(80 Model.)

TH: namus PETERS cc Puo'raumu, WASHINGTON, a r

. Patented Nov. I8, I902. J. V. & E. CUNNIFF.

WARP STOP MOTION FOR LOOIIS.

[Application filed Mar. 31, 1902.)

(No Model.)

5 Sheets-Sheet 2 llllllllll l l l THE nonrus vsrzks CD'PHOTQ-UTHOHwxsmxmuu. o. u.

No. 713,610. I Patented Nov. I8, 1902.

J. v. a E. cunmrr.

WARP STOP momm FOR Loans. 4

(Application filed m. 31, 1902.

(In Model.) 5 Shaais--Sheat 3.

4 f dig M No. 713,610. Patented Nov. I8, I902.

J. V. &. E. CUNNIFF.

vWARP STOP IO'HON FOB LOUIS.

(Application n1=d 1m-. a1, 1902. (No Model.) 5 Sheets-sheet mmMINIMUMHllw F lllwlymjllllllmil flllil'Il/IIIIIIII/IjI/Iffiini I mum ll l l lp I No. 7|3,6l0. Patented Nov. 18, I902.

J. v. a. 5. CUNNIFF. WARP STOP MOTION FOR LOOMS.

(Application filed Mar. 31, 1902.)

5 Sheets-Sheet 5.

(N0 Modal.)

J %I VENT 65: @163 24% w f 1n: "cams PETERS co Moraumq, WASHINGTON 0.1:.

UNTTnn STATES PATENT OFFICE.

JOHN V. OUNNIFF AND EDWVARD OUNNIFF, OF NEW BEDFORD, ll/IASSA- OHUSETTS,ASSIGNORS TO AHERIOAN MECHANICAL WARP STOP COM- PANY, OF PAXVTUCKET,RHODE ISLAND, A OORPORATION OF RHODE ISLAND.

WARP STOP-MOTION FOR LOOMS.

SPECILFICATION forming part of Letters Patent No. 713,610, datedNovember 18, 1902.

Application filed March 31, 1902.

T (0M whom, it may concern:

Be it known that we, JOHN V. CUNNIFF and EDWARD CUNNIFF, citizens of theUnited States, residing in New Bedford, in the county of Bristol andState of Massachusetts, have invented new and useful Improvements in\Varp Stop-Motions for Looms, of which the following is a specification.

This invention relates to that class of warp 1o stop-motions for loomsin which the mechanism connected with the shipper is operated by thedropping of one or more wires or detectors from one or more rows ofdetectors between an oscillator or vibrator and a deflector, wherebymovement is communicated by the oscillator to mechanism intermediatethereof and the shipping mechanism.

The present invention or improvement relates to constructions orarrangements whereby separate shafts are provided for the oscillator andthe deflector; whereby said separate shafts are rendered immediatelyindependent of each other, one shaft relating solely and separately tothe oscillator and the other shaft relating solely and separately to thedeflector; whereby the deflector and oscillator are located below therocker-shaft; whereby the deflector is returned to its normal positionafter stoppage; whereby the strain on the connection with theactuatingcam is eased, especially when several detectors fall at thesame time or the whole warp slackens; whereby the deflector is adaptedto operate in connection with more than two 5 rows of detectors, andwhereby in other respects the operation of the device is improved.

The nature of the invention is fully described in detail below, andillustrated in the accompanying drawings, in which Figure 1 is asectional side elevation showing enough of a loom to illustrateourinvention. Fig.2 is an enlarged detail, in rear elevation, of thedetecting mechanism, portions being represented as broken out. Fig. 3 isa vertical section taken on line 3, Fig. 2. Fig. 4c is a detail inelevation and section looking from the inside of the lay, showingmechanism connected with the knock-off lever. Fig.

Serial No. 100,664=. (No model.)

5 is a plan view of the same. Fig. 6 is a detail in elevationillustrating the mechanism vertical section taken on line 8, Fig. 7,illustrating the device with three series of detectors. Fig. 9 is across vertical section showing a second modification of the detectingmechanism. Fig. 10 is a cross vertical section in detail showing aslight modification of the deflector.

Similar characters of referenceindicate corresponding parts.

Referring to Figs. 1 to 6, inclusive, in the drawings, 1 representsportions of the frame of theloom. 2 is the lay; 3,th'ebreast-beam; 4:,the harness; 5, the warp-threads, and 6 the shipping-lever. Verticalstandards 7, Figs. 1, 2, and 3, are bolted at 8 to the machine atopposite ends and are each provided with vet tical slots 9. Adjustablysecured to these standards are brackets, each of which consists of theupper portion 10, lower portion 11, and connecting portion 12, a Web 13strengthening the same. Horizontal and vertical adjustments are securedby means of bolts 14, which extend through the vertical slots 9 in thestandards and through horizontal slots 15 in the upper portions 10 ofthe brackets. The lower portionllof each bracket is vertically slottedat 16 to receive bolts 17, whereby vertical adjustment and support aresecured to cup-shaped lips 18, Figs. 2 and 3, which sustain the oppositeends of the tubular lease-rods 19. By these means the leaserods can beadjusted both vertically and horizontally and can easily be lifted offand removed from the machine. The portions 11 of the brackets arefurthermore connected by two or more parallel guide-bars 20, whichextend through slots 21 in a corresponding number of rows of detectors22. These detectors are elastic, being made of spring-steel about eightone-thousandths of an inch in thickness, and they are rendered stillmore elastic by the length of their slots.

In the first six figures of the drawings provision is made for but tworows of detectors; but in Fig. 8 (which will be below described)provision is made for three rows of detectors.

23 represents the rocker-shaft supported and having its bearings in thelower portions 11 of the brackets, and supported and having its hearingsin the same brackets below the rocker-shaftis another shaft 24,which weterm the deflector-shaft. The rocker-shaft or oscillator-shaft 23 hasrigidly secured to it, near its opposite ends and outside the bracket 11at 25, the upper ends of curved arms 26, Figs. 1, 2, and 6, said armsbeing thus curved in order to avoid the shaft 24 and having their lowerends support in any suitable manner and be connected by an oscillator27, said oscillator consisting of a wire or rod, as shown. Rigidlysecured to the opposite ends of the deflector-shaft 24 are arms 28,whose onteror lower ends support and are connected by rods or wires 29,preferably two in number, the lower ends of the arms 28 being of shapeto receive the rods or wires 29 side by side and said wires constitutinga deflector. The upper end of one of the arms 28 is flattened, asindicated at 30 in. Fig. 6, and the free end of a lever or pawl 31 restsnormally on said flattened end, the hub 32 of said pawl being loose on ahorizontal stud 33, which is supported by the bracket 11 at that end. Aspring 34 has one end secured to a collar 35, rigid on the stud, and itsother end is attached to a pin 36 on the hub 32. By means of this springthe lever or pawl is held normally in the position indicatedin Fig. 6,and hence the deflector is held normally in the position illustratedtherein. Rigid on one end of the rockershaft or oscillator-shaft 23 is acrank 37, (see Figs. 1 and 2and dotted linesin Fig. 6,) whose outer endis connected by an eccentric-rod 38 with an eccentric 39 on thedriving-shaft 40. Thiseccentric-rod is dividedto receiveaspringmechanism. (Illustrated in Fig. 2.) The end of the upper portion of theeccentric-rod 38 is provided with a bifurcated frame 41, from which twoparallel rods or bars 42 extend downward through a plate 43, supportedby the upper end of the lower portion of the eccentric-rod 38. This endis provided with a rod or bar 44, which extends through a plate 45,supported by the bifurcated frame 41, the rod 44 being held in suchposition by a suitable nut- 46.

Disposed on the rod 44 between the plates 43 and 45 is a spiral spring47, and disposed on the rods 42 between the plate 45 and nuts 48 arespiral springs 49. A not 50 is secured to the upper part of the lowerportion of the eccentric-rod 38 below the plate 43. Connection betweenthe shipping mechanism and the deflector is made by means of the arm orlever 51, which is rigidly secured at its upper end to one of thedeflector-arms 28, its lower end being pivotally connected at 52, Figs.1 and 2, with the link or rod 53, whose opposite end is pivotallyconnected at 54, Fig. 4, with the bell-crank 55, adjustably supported bymeans of a suitable frame 56 by the frame of the machine. The oppositearm of the bell-crank is connected by a lifting-rod 57 with a bellcrank58, adjustably supported by means of a suitable frame 59 by thebreast-beam. The other arm of the bell-crank 58 holds normally up theknock-off lever or dagger 60, which is pivoted at 61 to the horizontallever 62, pivoted at 63 to a suitable plate on the breastbeam.

The rocker shaft 23 being oscillated by means of the crank 37, which isconnected, as above mentioned, by the eccentric-rod 38 with theeccentric 39 on the driving-shaft 40, the oscillator 27 vibrates underthe rows of de tectors and also under the rocker-shaft, theoscillator-arms 26 being sufficiently curved or recessed to allow roomfor the throw without contact with the rocker-shaft. Should a detectorfall, it must fall on one side or the other of the deflector 29 orbetween the two rods or wires constituting said deflector. It is thencaught between the oscillator 27 and deflector 29, with the effect thatthe oscillator, through the medium of the detector and deflector and oneof the vibrating arms 28, operates, by means of the lever 51, link 53,bell-crank 55, lifting-rod 57, and bell-crank 58, to withdraw thesupport from the dagger and allow it to drop from its normal raisedposition, (indicated in Fig. 1,) so that it comes in contact with theprojection 64, Fig. 1. This swings. the lever 62 and operates theshipper 6, stopping the machine. VVhen the deflector is swung in themanner above mentioned by the dropping of a detector, the flat uppersurface 30 of the hub of one of the deflector-arms 28 is of course swungout of a horizontal position, lifting the lever or pawl 31 against thepower of the spring 34. This spring and pawl then operate to return thedeflector-arm and deflec tor into the original position. The springmechanism 41 to 50, inclusive, operates to yield sufficiently to easethe strain on the eccentric-rod, especially when several detectors fallat the same time or when the warp slackens, and thus injury to theoscillator is prevented. The elasticity of the detectors, by reason oftheir spring, thinness, and the length of the slots formed in them, issuch that a dropped detector 22 will yield to allow the oscillator 27 topass under and beyond it in order to make a return stroke and effect themovement of a dropped detector on the other side of the deflector onsaid return. Thus it will be seen that the oscillator and deflector areapplied to separate shafts, each being in its immediate actionindependent of the other, and, moreover, that both the oscillator anddeflector are under the rocker-shaft, so that the oscillator-arms anddeflector-arms extend down from the oscillator and deflector instead ofup therefrom toward rows of overhead deflectors.

In Figs. 1 to 6, inclusive, the rocker-shaft or oscillator-shaft 23 isabove the deflectorshaft 24:; but in Figs. 7 and 8 we place one of theseshafts within the other and show the deflector and oscillator extendingnormally upward between the rocker-shaft and overhead rows of detectors.In these two figures the rocker-shaft is indicated at 65, has itsbearings in the brackets 72, secured to the frame, and has rigidlyextending upward fromit the curved oscillator-arms 66, connected attheir upper ends by the oscillator 67. 68 represents a tubulardeflector-shaft separated from the rocker-shaft by the tubularextensions 72 of the brackets 72, the deflectorshaft having secured toit the upwardly-extending deflector-arms 70, connected at their upperends by the deflector 71. Brackets 73 support the lease-rods 19. A rod74 connects downward extensions of the oscillator-arms 66 with theeccentric-rod 38, and one of the deflector-arms is connected,substantially as before described, with the shipping mechanism. It isapparent that although in Figs. 7 and 8 the rocker-shaft is within thedeflectorshaft the two shafts are as separate and independent as in Fig.2, where one is above the other. In Fig. 8 there are shown three rows ofdetectors 22 and a corresponding number of parallel bars 20. In order toaccommodate the three rows of detectors, the upper ends of thedeflector-arms 70 are bifurcated or yoke-shaped at in order to sustaintwo separated bars which constitute the deflector 71. Should a detectorfall, it must drop on one side or the other of the deflectors 71 orbetween them, and hence it is caught either between the oscillator 67and one of the deflector-bars or between the two deflector-- bars, withthe effect that the shipping-lever 6 is operated as above described.

In Fig. 9 the oscillator-shaft 23 and deflectorshaft 24: are located oneabove the other, as in Figs. 2 and 3; but the oscillator, which isindicated by the bar 76, and the deflector, which is indicated by thebar 77, are held up by arms 78 and 79, respectively, above their shaftsand beneath the detectors 22. An arm 80, curved to avoid the shaft 24:,extends down from one of the oscillator-arms and connects with theeccentric mechanism.

In Fig. 10 the deflector-arms 28 are as in the first six figures, exceptthat the two deflector-wires 29 are held far enough apart to be outsidethe paths of movement of the rows of detectors as they dropthat is, onthe opposite sides of said paths of movement from the fulcrum of thedeflector which is between them. By this means the strain on thedropwire is lessened, as the oscillator effects the stopping of the loomon the outward stroke and at the termination thereof in eitherdirection, and hence at a time when the movement of the oscillator asgoverned by the eccentric is slower than when knocking off is performedat the center of its arc of vibration.

Having thus fully described our invention, what we claim, and desire tosecure by Letters Patent, is

1. In a warp stop-motion for looms, a series of slotted drop devices ordetectors adapted to be sustained by warp-threads; parallel guide-barsextending through the detectors; a rocker-shaft supported by the frame;an oscillator comprising arms rigid on said shaft and a horizontalconnection between and supported by said arms; a deflector-shaftsupported by the frame; a deflector independent of the guide-bars, andcomprising arms supported by said shaft and a horizontal connectionbetween and supported by said arms, the said rocker-shaft anddeflector-shaft being separate and independent of each other; andmechanism whereby the descent of a drop device or detector between thedeflector and the oscillator operates the mechanism connected with theshipper.

2. In a warp stop-motion for looms, a series of slotted drop devices ordetectors adapted to be sustained by warp-threads; parallel guide-barsextending through the detectors; a rocker-shaft supported by the frame;an oscillator comprising arms rigid on said shaft and a horizontalconnection between and supported by said arms; a deflector-shaftsupported by the frame; a deflector independent of the guide-bars, andcomprising arms supported by said shaft and a horizontal connectionbetween and supported by said arms, the said rocker-shaft anddeflector-shaft being separate and independent of each other, andlocated one above the other; and mechanism whereby the descent of a dropdevice or detector between the deflector and the oscillator operates themechanism connected with the shipper.

3. In a warp stop-motion for looms, a series of drop devices ordetectors adapted to be 1 sustained by warp-threads; a deflector-shaftsupported by the frame; a downwardly-extending deflector comprising armssupported by said deflector-shaft and a horizontal connection betweenand supported by said arms; a rocker-shaft supported by the frameindependent of and above the deflector-shaft; a downwardly-extendingoscillator comprising arms rigid on said rocker-shaft and a horizontalconnection between and supported by said arms; and mechanism whereby thedescent of a drop device or detector between the deflector andoscillator operates the shipping mechanism.

4. In a warp stop-motion forlooms, a series of drop devices or detectorsadapted to be sustained by warp-threads; a deflector-shaft supported bythe frame; a downwardly-extending deflector comprising arms supported bysaid deflector-shaft and a horizontal connection between and supportedby said arms;

a rocker-shaft supported by the frame independent of and above thedeflector-shaft; a downwardly-extending oscillator comprising arms rigidon said rocker-shaft and a horizontal connection between and supportedby said arms, said arms being curved or recessed to allow vibrationthereof without contact &

with the deflector shaft; and mechanism whereby the descent of a dropdevice or detector between the deflector and oscillator operates theshipping mechanism.

5. In a warp stop-motion for looms, aseries of slotted drop devices ordetectors adapted to be sustained by warp-threads; a rockershaftsupported by the frame; a down wardlyextending oscillator having amotion uninterrupted by the descent of a drop device or detector, andcomprising arms rigid on said rocker-shaft and a horizontal connectionbetween and supported by said arms; a downwardly-extending deflectorcomprising a pinrality of arms pivotally supported by the frame and ahorizontal connection between and supported by said arms; and mechanismwhereby the descent of a drop device or detector between the deflectorand oscillator operates the shipping mechanism.

6. In a warp stop-motion for looms, a series of drop devices ordetectors adapted to be sustained by warp-threads; a rocker-shaftsupported by the frame; an oscillator comprising arms rigid on saidshaft and a horizontal connection between and supported by said arms; adeflector-shaft supported by the frame; a deflector located entirelybelow the warp, and comprising arms supported by said shaft and ahorizontal connection between and supported by said arms; springmechanism consisting of a spring-controlled positioning-pawl connectedwith the deflector and deflector-shaft adapted to retain the deflectorin its normal position and to return the said deflector after movementto such position; and mechanism intermediate of the deflector andshipping mechanism for operating the latter upon the dropping of adetector.

7. In a warp stop-motion for looms, more than two series of rows of dropdevices or detectors adapted to be sustained by warpthreads; atrocker-shaft supported by the frame; an oscillator comprising arms rigidon said shaft and a horizontal connection between and supported by saidarms; a deflector supported by a suitable shaft sustained by the frame,and comprising arms extending from said shaft, and a plurality ofhorizontal connections between and supported by said arms, whereby thebreaking of a warpthread causes a drop device or detector to drop eitherbetween the deflector and oscillator on either side of the former orbetween the two horizontal connections making a part of the deflector.

8. In a warp stop-motion for looms, a series of rows of drop devices ordetectors adapted to be sustained by warp-threads; a rockershaftsupported by the frame; an oscillator comprising arms extending fromsaid shaft and a connection between and supported by said arms; adeflector-shaft supported by the frame; a deflector comprising armssupported by the deflector-shaft and a plurality of connecting wires orbars between and supported by said arms, said wires or bars beinglocated on the outer sides or opposite sides of the paths of movement ofthe rows of detectors from the fulcrum of the deflector which is locatedbetween said paths of movement; and mechanism whereby the descent of adetector between the deflector and the oscillator operates the shippingmechanism.

In testimony whereof we have signed our our names to this specificationin the presence of two subscribing witnesses.

JOHN V. OUNNIFF. EDWARD CUNNIFF. WVitnesses:

CORNELIUS H. MURPHY, EDMUND J. WHALLEY.

